CN101274203A - Method for removing carbon disulfide gas in production process of viscose fiber - Google Patents
Method for removing carbon disulfide gas in production process of viscose fiber Download PDFInfo
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- CN101274203A CN101274203A CNA2007103013376A CN200710301337A CN101274203A CN 101274203 A CN101274203 A CN 101274203A CN A2007103013376 A CNA2007103013376 A CN A2007103013376A CN 200710301337 A CN200710301337 A CN 200710301337A CN 101274203 A CN101274203 A CN 101274203A
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Abstract
The invention provides a method for removing sulfureted hydrogen gas, in particular a method for removing carbon disulfide gas in the production process of viscose fibre. The method has the steps as follows: H2S gas in the exhaust gas exhausted out of a spinning workshop is removed by an alkali washing system and then the H2S gas is further removed after the exhaust gas enters a washing tower; after vapour is removed by a spraying separator, the exhaust gas enters five parallel absorbing channels through a fan; physical adsorption of the exhaust gas is carried out by active carbon; the exhaust gas which is adsorbed is directly exhausted into an exhaust tower; resolved carbon disulfide mixed gases are dehumidified and twice condensed so as to gain mixed liquid of carbon disulfide gas and water which are separated by being dipped in a gravity separator to gain the carbon disulfide liquid used for production. The five absorbing channels of the invention are connected with each other in parallel; meanwhile, at least two absorbing channels are used for adsorption, thus ensuring the continuity of the processing. The adsorption is carried out by the active carbon; as the adsorption belongs to physical adsorption, the raw material is renewable, the removal efficiency is high, the finally gained carbon disulfide liquid is used for production, and the objects of energy-saving and exhaust-reduction are achieved.
Description
Technical field:
The present invention relates to a kind of method of removing hydrogen sulfide gas, specifically utilize the characterization of adsorption of activated carbon to remove the method for carbon disulfide gas in the production process of viscose fiber.
Background technology
At present, to waste gas CS in the production process of viscose fiber
2Adopt following method to remove:
1. high altitude discharge: build the exhaust tower of certain altitude according to certain discharge capacity, reach the gas treatment facility of discharging standards by high altitude discharge.Though this device is invested little and almost do not had operating cost, it does not reduce the discharge of harmful gases total amount, and atmospheric environment is still had damaging effect, and the rising height of exhaust tower is subjected to the influence of weather environment easily.
2. condensation method is applicable to Local C S
2The operation that concentration is high, the method less energy consumption, operating cost is low.But organic efficiency is lower, generally accounts for 38%～45% of input amount, and the elementary recovery of Chang Zuowei can be adopted the filled cooling method of multistage shell and tube for improving the rate of recovery, and normal-temperature water is made one-level, two, three grades of chilled waters, the CS of condensation
2Can be back to use in the viscose rayon after purifying with moisture and to go.
3. absorption method: Fig. 2 is seen in its technological process, and adsorbent adopts active carbon (AC) or NACF (ACF).This method and technology maturation is removed the efficient height, and equipment is simple but investment is big, is applicable to and handles atm number, low concentration gas.The waste gas that enters adsorbent equipment needs dehumidification in advance.
4. catalytic oxidation: catalytic oxidation is the deep oxidation method.With the sulfur-containing compound catalytic oxidation is SO
3, the condensation water absorbs again becomes sulfuric acid.This technology can be with sulphur so that the form of removing reclaim, again can be with H
2S, CS
2Effectively remove in addition and do not produce secondary pollution.More representative in the world at present is the WSA method of company of Denmark Top rope (Topsoe) and the KVT-SUIFOX method of Switzerland Maurer company.Both reaction mechanisms are similar, and are as follows:
(urging I to have another name called CK in the WSA method)
(urge II to have another name called VK in the WSA method, urge II to have another name called V in the KVT-SUIFOX method
2O
5)
SO
3+H
2O→H
2SO
4
5. bioanalysis: bioanalysis is handled H
2S research has become ripe, but CS
2Toxicity bigger, bacterial classification is difficult to cultivate, progress is more slow, but this method is low because of having operating cost, removal efficient height, and non-secondary pollution; Can handle various concentration waste gas, be particularly suited for large-wind-volume low-concentration waste gas, every cubic metre disposal cost is low relatively; Modularized design can adapt to different advantages such as air quantity, has very much a development potentiality.Have colleges and universities' result of study to show, filler is handled low concentration CS by haydite and 4: 1 mixed bio-trickling filters of forming of small amount of activated
2Waste gas (≤remove efficient 800ppm) time can reach more than 90%, remove efficient and reduce but raise with concentration.
Summary of the invention
The purpose of this invention is to provide a kind of physisorption type of utilizing activated carbon can remove viscose glue produce in the carbon disulfide gas of variable concentrations, make its environmental requirement that reaches direct discharging, remove the method for carbon disulfide gas in the high removal production process of viscose fiber of efficient.
Realize the foregoing invention purpose by the following technical solutions: a kind of method of removing carbon disulfide gas in the production process of viscose fiber, comprise and remove scrubbing tower, blower fan, absorption cell, the condenser that waste gas is used that this method mainly comprises the steps: to remove H by spinning the waste gas of discharging between practice through caustic washing system
2Enter scrubbing tower behind the S gas and further remove H
2S gas, then through after spraying separator removal steam, enter absorption cell by blower fan, carry out physical absorption with activated carbon, waste gas after adsorption treatment directly is discharged into exhaust tower, the gaseous mixture of the carbon disulfide that parses through dehumidifying, obtain the mixed liquor of carbon disulfide and water after twice condensation, soaked and obtains carbon disulfide liquid after specific gravity separator separates and be used for producing.
Adopt technique scheme, compared with prior art, five absorption cell parallel connections of the present invention have two absorption cells at least simultaneously in absorption, have guaranteed the continuity of technology.Utilize activated carbon to adsorb, owing to belong to physical absorption,, remove the efficient height, and draw carbon disulfide liquid at last and be used for producing, reached the purpose of energy-saving and emission-reduction so raw material can be regenerated.
Description of drawings
Fig. 1 is a technology process general flow chart of the present invention.
Fig. 2 is the flow chart of background technology.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to accompanying drawing 1, by spinning the waste gas process alkali cleaning H that discharges between practice
2H removes in the S system
2Enter behind the S gas and further remove H in two scrubbing towers that are connected in parallel
2S gas, entering two by the gas of scrubbing tower output sprays in the separators and removes steam, after spraying separator removal steam, gas is by three dirty gas blower fans, gas enters in five absorption cells that are connected in parallel under the effect of dirty gas blower fan, at least two grooves of five absorption cells adsorb simultaneously, cause absorption cell to carry out physical absorption with active carbon continuously, waste gas after handling in absorption cell directly is discharged into exhaust tower, the gaseous mixture of the carbon disulfide that parses by exhaust tower, enter condenser through the evaporimeter dehumidifying, after twice condensation, obtain the mixed liquor of carbon disulfide and water, enter exhaust tank, the mixed liquor that cools down by condenser directly enters specific gravity separator by exhaust tank, and the uncolled gas that gets off enters after-condenser by exhaust tank.Uncooled gas carries out the secondary heat exchange with chilled water in gaseous effluent, the liquid that obtains enters specific gravity separator by safety can.Obtaining carbon disulfide liquid after specific gravity separator separates is stored in storage tank and is used for producing.
Capital equipment and effect that the present invention uses:
Scrubbing tower: mainly be remaining H in the waste gas after alkali cleaning was soaked in removal
2S gas guarantees to enter the waste gas H in the carbon adsorption system
2S content is up to standard, otherwise will cause the activated carbon poisoning, influences CS
2Adsorption efficiency.
Enter scrubbing tower at this process gas by the bottom, the H of remnants in the gas
2S gas moves from bottom to top from tower body, successively washs the back through once washing through twice diluted alkaline, has removed remaining H basically
2S gas has satisfied technological requirement.
Dirty gas blower fan: it is the PTO of whole system waste gas operation, and the air quantity of dirty gas blower fan, the isoparametric correct selection of blast have been played key effect to the quality of system's operation.
Absorption cell: the core that is adsorption system, gas is through entering the absorption cell that meets the absorption requirement by DCS system control valve behind the dirty gas blower fan, after treating that activated carbon in this absorption cell is saturated, gas automatically switches to next absorption cell, saturated absorption cell obtains the carbon disulfide gaseous mixture after overshoot nitrogen, parsing, drying, cooling, a circulation like this is finished.
All realize control automatically, switch in the absorption cell part, the possibility of having avoided the human operational error to cause security incident to take place by the DCS system.
Evaporimeter: remove part steam by cooling after the carbon disulfide gaseous mixture after being resolved by absorption cell soaks the pervaporation device.
Condenser: the carbon disulfide gaseous mixture carries out heat exchange at this and cooling water and reaches the portion gas cooling purpose, and cooled mixed liquor and mixed air enter exhaust tank.
Exhaust tank: enter specific gravity separator by the mixed liquor exhaust tank that cools down behind the condenser, the uncolled gas that gets off enters after-condenser by exhaust tank.
Gaseous effluent: uncooled gas carries out the secondary heat exchange at this and chilled water, and the liquid that obtains enters specific gravity separator.
Safety can: enter absorption cell once more through safety can through gas still uncolled behind the time condensation.
Specific gravity separator: through the static layering that reaches water and carbon disulfide, the carbon disulfide liquid that obtains uses through carrying supply to produce by hydraulic pressure behind the aftercooler liquid that obtains after supercooling at this.
The equipment that the present invention uses belongs to conventional equipment, will select various device for use according to technological requirement during concrete operations.
Claims (2)
1, a kind of method of removing carbon disulfide gas in the production process of viscose fiber, comprise and remove scrubbing tower, blower fan, absorption cell, the condenser that waste gas is used, it is characterized in that: this method mainly comprises the steps: to remove H by spinning the waste gas of discharging between practice through caustic washing system
2Enter scrubbing tower behind the S gas and further remove H
2S gas, remove steam through spraying separator then, enter absorption cell by blower fan, in absorption cell, carry out physical absorption with activated carbon, waste gas after adsorption treatment directly is discharged into exhaust tower, the gaseous mixture of the carbon disulfide that parses through obtaining the mixed liquor of carbon disulfide and water after dehumidifying, twice condensation, obtains carbon disulfide liquid after separating through specific gravity separator again and is used for producing.
2, the method for carbon disulfide gas in the removal production process of viscose fiber according to claim 1, it is characterized in that: described absorption cell is set to five, and five absorption cells are connected in parallel, and are connected with exhaust tower, evaporimeter and safety can respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007103013376A CN101274203B (en) | 2007-12-27 | 2007-12-27 | Method for removing carbon disulfide gas in production process of viscose fiber |
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|---|---|---|---|
| CN2007103013376A CN101274203B (en) | 2007-12-27 | 2007-12-27 | Method for removing carbon disulfide gas in production process of viscose fiber |
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| CN101274203A true CN101274203A (en) | 2008-10-01 |
| CN101274203B CN101274203B (en) | 2011-06-15 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068900A (en) * | 2011-01-11 | 2011-05-25 | 中环（中国）工程有限公司 | Wet parallel treatment device of high-sulfur-content flue gas |
| CN102153053A (en) * | 2010-11-20 | 2011-08-17 | 辽宁瑞兴化工集团有限公司 | Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method |
| CN102743969A (en) * | 2012-07-16 | 2012-10-24 | 北京绿创环保设备股份有限公司 | Treatment method for mixed waste gas containing H2S and CS2 |
| CN102772991A (en) * | 2011-05-11 | 2012-11-14 | 姚茂洪 | Alkaline washing tank, washing tower and adsorption tank system |
| CN103920361A (en) * | 2014-03-31 | 2014-07-16 | 龚䶮 | Desorption method, recycling method and recycling device of carbon disulfide |
| CN103920363A (en) * | 2014-03-31 | 2014-07-16 | 龚䶮 | Method and device for treating sulfurous industrial waste gas |
| CN104436742A (en) * | 2014-10-20 | 2015-03-25 | 宜宾丝丽雅股份有限公司 | CS produced by viscose staple fiber2Recovery process |
| CN105194974A (en) * | 2015-09-25 | 2015-12-30 | 杭州奥通环保科技有限公司 | Carbon disulfide waste gas vacuum desorption treatment device and treatment method |
| CN105600857A (en) * | 2015-10-22 | 2016-05-25 | 唐山三友集团兴达化纤有限公司 | Degassing treatment technology of alkaline wastewater in viscose fiber production |
| CN112843983A (en) * | 2020-12-31 | 2021-05-28 | 江苏申江环境科技有限公司 | Recovery process of carbon disulfide in viscose fiber production |
| CN113058424A (en) * | 2021-03-26 | 2021-07-02 | 新疆中泰创新技术研究院有限责任公司 | Method and system for treating waste gas generated in production of viscose fibers containing hydrogen sulfide and carbon disulfide |
| CN113373555A (en) * | 2021-06-15 | 2021-09-10 | 赛得利(江苏)纤维有限公司 | Method for reducing consumption of stock solution sulfonated carbon disulfide |
| CN114515441A (en) * | 2022-03-30 | 2022-05-20 | 山东渤海实业集团有限公司 | Carbon disulfide condensation recovery device and recovery process thereof, carbon disulfide condensation recovery system and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69816825T2 (en) * | 1997-05-21 | 2004-05-27 | Turbotak Technologies Inc., Waterloo | REMOVAL OF IMPURITIES FROM EXHAUST GASES IN THE PRODUCTION OF VISCOSE FIBERS |
| CN2785692Y (en) * | 2005-04-15 | 2006-06-07 | 傅太平 | Organic solvent recovery device |
| CN100450586C (en) * | 2007-03-26 | 2009-01-14 | 丹东多纶机械厂 | Process for removing hydrogen sulphide from carbon bisulfide waste gas and apparatus therefor |
-
2007
- 2007-12-27 CN CN2007103013376A patent/CN101274203B/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153053A (en) * | 2010-11-20 | 2011-08-17 | 辽宁瑞兴化工集团有限公司 | Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method |
| CN102153053B (en) * | 2010-11-20 | 2013-04-10 | 辽宁瑞兴化工集团有限公司 | Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method |
| CN102068900A (en) * | 2011-01-11 | 2011-05-25 | 中环（中国）工程有限公司 | Wet parallel treatment device of high-sulfur-content flue gas |
| CN102772991A (en) * | 2011-05-11 | 2012-11-14 | 姚茂洪 | Alkaline washing tank, washing tower and adsorption tank system |
| CN102743969A (en) * | 2012-07-16 | 2012-10-24 | 北京绿创环保设备股份有限公司 | Treatment method for mixed waste gas containing H2S and CS2 |
| CN103920361A (en) * | 2014-03-31 | 2014-07-16 | 龚䶮 | Desorption method, recycling method and recycling device of carbon disulfide |
| CN103920363A (en) * | 2014-03-31 | 2014-07-16 | 龚䶮 | Method and device for treating sulfurous industrial waste gas |
| CN104436742B (en) * | 2014-10-20 | 2016-05-25 | 宜宾丝丽雅股份有限公司 | CS produced by viscose staple fiber2Recovery process |
| CN104436742A (en) * | 2014-10-20 | 2015-03-25 | 宜宾丝丽雅股份有限公司 | CS produced by viscose staple fiber2Recovery process |
| CN105194974A (en) * | 2015-09-25 | 2015-12-30 | 杭州奥通环保科技有限公司 | Carbon disulfide waste gas vacuum desorption treatment device and treatment method |
| CN105600857A (en) * | 2015-10-22 | 2016-05-25 | 唐山三友集团兴达化纤有限公司 | Degassing treatment technology of alkaline wastewater in viscose fiber production |
| CN112843983A (en) * | 2020-12-31 | 2021-05-28 | 江苏申江环境科技有限公司 | Recovery process of carbon disulfide in viscose fiber production |
| CN113058424A (en) * | 2021-03-26 | 2021-07-02 | 新疆中泰创新技术研究院有限责任公司 | Method and system for treating waste gas generated in production of viscose fibers containing hydrogen sulfide and carbon disulfide |
| CN113373555A (en) * | 2021-06-15 | 2021-09-10 | 赛得利(江苏)纤维有限公司 | Method for reducing consumption of stock solution sulfonated carbon disulfide |
| CN113373555B (en) * | 2021-06-15 | 2022-04-01 | 赛得利(江苏)纤维有限公司 | Method for reducing consumption of stock solution sulfonated carbon disulfide |
| CN114515441A (en) * | 2022-03-30 | 2022-05-20 | 山东渤海实业集团有限公司 | Carbon disulfide condensation recovery device and recovery process thereof, carbon disulfide condensation recovery system and application thereof |
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| CN101274203B (en) | 2011-06-15 |
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